棕榈科血竭含有( )
A.血竭红素
B.血竭白素
C.血竭素
D.黄烷醇
参考答案:A,C,D
新生儿淋菌性结膜炎最易经哪项传染()
A.被污染的浴盆、洁具
B.被污染的毛巾、手
C.患病母亲产道
D.患病母亲乳汁
E.患病母亲亲吻
I'm tired out. I ______ all afternoon and I don't seem to have finished anything.
A. shopped B. have shoppedC. had shopped D. have been shopping